Modulating inherent lewis acidity at the intergrowth interface of mortise-tenon zeolite catalyst.

ABSTRACT: The acid sites of zeolite are important local structures to control the products in the chemical conversion. However, it remains a great challenge to precisely design the structures of acid sites, since there are still lack the controllable methods to generate and identify them with a high resolution. Here, we use the lattice mismatch of the intergrown zeolite to enrich the inherent Lewis acid sites (LASs) at the interface of a mortise-tenon ZSM-5 catalyst (ZSM-5-MT) with a 90° intergrowth structure. ZSM-5-MT is formed by two perpendicular blocks that are atomically resolved by integrated differential phase contrast scanning transmission electron microscopy (iDPC-STEM). It can be revealed by various methods that novel framework-associated Al (Al_FR) LASs are generated in ZSM-5-MT

SUBMITTER: Wang H 

PROVIDER: S-EPMC9133034 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature